George,
I cannot determine from the spec sheet whether the amp is 400-watts peak, or 400-watts RMS. What is the RMS power? Whoops, I just found the information in the manual--it's only 200-watts RMS at 8 ohms.
Bill (Semilive),
Looks like the Z-5500 puts out a lot more at 500-watts RMS, 1,100-watts peak power. Plus, the Z-5500's sub is gangbusters, and the overall sound is outstanding. I suspect the price will be coming down after the first of the year, and there have been a few sales at $199 with free shipping during the past few months. It takes a bit little work to set the system up initially, but after you mount the satellite speakers on platforms, the Z-5500 will blow the doors down.
Good Luck,
Gary
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Travlin' Easy [This message has been edited by travlin'easy (edited 12-30-2006).]